code: def backend_fails(gm, example_inputs, compiler_fn, orig_failure):
      """
      Minifier uses this function to identify if the minified graph module fails
      with the same error.
  
      One caveat is that minifier can potentially go into a wrong direction when
      the resulting graph module fails for a different reason. To avoid this, we
      save the string for the original exception and check similarity between new
      and old exception. They can be somewhat different in some cases, when the
      exception string depends on the failing node information. So, we have a
      loose similarity metric to guide the minifier path.
      """
      from difflib import SequenceMatcher
  
      try:
          # Run the original gm to check eager validity
          run_fwd_maybe_bwd(
              gm, clone_inputs_retaining_gradness(example_inputs)
          )
          compiled_gm = compiler_fn(gm, example_inputs)
          run_fwd_maybe_bwd(
              compiled_gm,
              clone_inputs_retaining_gradness(example_inputs),
          )
          return False
      except Exception as e:
          new_failure = str(e)
          if (
              SequenceMatcher(None, orig_failure, new_failure).ratio()
              > 0.5
          ):
              return True
          return False
  
imports: import argparse
  import copy
  import functools
  import logging
  import os
  import shutil
  import sys
  import textwrap
  from importlib import import_module
  from typing import Union
  import torch
  import torch.fx
  from torch._dynamo.debug_utils import AccuracyError, backend_accuracy_fails, BUCK_CMD_PREFIX, BuckTargetWriter, extra_imports, generate_config_string, helper_for_dump_minify, InputReader, InputWriter, minifier_dir, NNModuleToString, NopInputReader, run_fwd_maybe_bwd, same_two_models
  from torch.fx.experimental.symbolic_shapes import fx_placeholder_targets
  from torch.hub import tqdm
  from ..None import config
  from ..backends.registry import lookup_backend, register_debug_backend
  from ..debug_utils import clone_inputs_retaining_gradness
label_desc: Use image node_id 8 for calling a global function with example usage: backend_fails(gm, example_inputs, compiler_fn, orig_failure) and returns: False, False, True